If we stare at a distant star like Alpha Centauri for example, we are technically looking four years in the past (because light travelling at light speed will take that long to reach our eyes). Let us imagine that we somehow stumble upon a wormhole big enough to fly a starship through and travel to a planet, say, a hundred light years away in a few hours. Now...if we had a telescope powerful enough, and aimed it at Earth, would we then see planet Earth 100 years in the past? If so, would that be some kind of paradox? Is that time travel? Is it possible? I know that theoretically wormholes are possible, and maybe even travel between them, but stuff like this seems like a major hickup in the universe. Now I know that you're gonna say that no telescope is powerful enough to see any detail of Earth from 100 LY away, humor me, the essence would be the same. I thank you now Cogito and Wreybies, because more than likely you guys will be the first to respond to this thread. Whenever heavy nerd SF talk is in the air you guys always seem to sniff it out somehow.